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Java > Open Source Codes > org > ofbiz > webapp > taglib > IteratorHasNextTag


1 /*
2  * $Id: IteratorHasNextTag.java 5462 2005-08-05 18:35:48Z jonesde $
3  *
4  * Copyright (c) 2002-2003 The Open For Business Project - www.ofbiz.org
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the "Software"),
8  * to deal in the Software without restriction, including without limitation
9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10  * and/or sell copies of the Software, and to permit persons to whom the
11  * Software is furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be included
14  * in all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
19  * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
20  * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT
21  * OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
22  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23  *
24  */

25 package org.ofbiz.webapp.taglib;
26
27 import java.io.IOException JavaDoc;
28 import java.util.Iterator JavaDoc;
29 import javax.servlet.jsp.JspTagException JavaDoc;
30 import javax.servlet.jsp.JspWriter JavaDoc;
31 import javax.servlet.jsp.tagext.BodyContent JavaDoc;
32 import javax.servlet.jsp.tagext.BodyTagSupport JavaDoc;
33
34
35 /**
36  * IteratorHasNextTag - Conditional Tag.
37  *
38  * @author <a HREF='mailto:jonesde@ofbiz.org'>David E. Jones</a>
39  * @version 1.0
40  * @created August 4, 2001
41  */

42 public class IteratorHasNextTag extends BodyTagSupport JavaDoc {
43
44     public int doStartTag() throws JspTagException JavaDoc {
45         IteratorTag iteratorTag =
46             (IteratorTag) findAncestorWithClass(this, IteratorTag.class);
47
48         if (iteratorTag == null)
49             throw new JspTagException JavaDoc("IterateNextTag not inside IteratorTag.");
50
51         Iterator JavaDoc iterator = iteratorTag.getIterator();
52
53         if (iterator == null || !iterator.hasNext())
54             return SKIP_BODY;
55
56         return EVAL_BODY_AGAIN;
57     }
58
59     public int doAfterBody() {
60         return SKIP_BODY;
61     }
62
63     public int doEndTag() {
64         try {
65             BodyContent JavaDoc body = getBodyContent();
66
67             if (body != null) {
68                 JspWriter JavaDoc out = body.getEnclosingWriter();
69                 String JavaDoc bodyString = body.getString();
70                 body.clearBody();
71                 out.print(bodyString);
72             }
73         } catch (IOException JavaDoc e) {
74             System.out.println("IterateNext Tag error: " + e);
75         }
76         return EVAL_PAGE;
77     }
78 }
79
80
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